CN110896153A - Method for improving electrolyte infiltration of soft package lithium ion battery - Google Patents
Method for improving electrolyte infiltration of soft package lithium ion battery Download PDFInfo
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- CN110896153A CN110896153A CN201811058533.XA CN201811058533A CN110896153A CN 110896153 A CN110896153 A CN 110896153A CN 201811058533 A CN201811058533 A CN 201811058533A CN 110896153 A CN110896153 A CN 110896153A
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- electrolyte
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- lithium ion
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention discloses a method for improving the electrolyte infiltration of a soft package lithium ion battery, which comprises the following steps: placing the battery cell subjected to top side sealing packaging in an oven to remove moisture, reducing the temperature to a certain temperature, keeping the temperature constant, and simultaneously preheating electrolyte; (2) placing the battery core in the middle of a clamping plate for clamping, vacuumizing, keeping the vacuum degree for 5-10 s, injecting preheated electrolyte, and standing for 10-60 s; (3) applying an outward force to the cell aluminum-plastic film, and keeping for 5-10 s; then clamping by using a clamping plate, applying roller pressure from bottom to top, discharging gas from the airbag, and repeatedly rolling for several times; (4) vacuumizing the battery cell, keeping the vacuum degree for 2-5 s, and then sealing; (5) and (4) placing the sealed battery cell in a rotating device, and rotating at a low speed for 1-3 hours to complete infiltration. The method has simple steps and convenient operation, can quickly infiltrate the electrolyte, shorten the standing time of the electric core after liquid injection, improve the production efficiency and easily realize industrialization.
Description
Technical Field
The invention belongs to the technical field of lithium ion batteries, and particularly relates to a method for improving the electrolyte infiltration of a soft package lithium ion battery.
Background
The lithium ion battery has the advantages of high open circuit voltage, large specific energy, long cycle life, good safety performance, small self-discharge, environmental protection and the like, and has wide application prospect in the fields of 3C communication tools, electric automobiles and the like.
The preparation of the lithium ion battery is from the step of preparing materials, the step of preparing tablets and the step of forming and grading, and each step plays a crucial role in influencing the performance of the lithium ion battery. Particularly, in the liquid injection step, the electrolyte transports lithium ions to the positive and negative plates through the diaphragm as human blood. Therefore, the battery can only exert excellent performance if the electrolyte has good contact with the positive and negative pole pieces and the diaphragm and is sufficiently wetted. However, most manufacturers, in order to fully soak the electrolyte, stand still for 40-50 hours at normal temperature after filling and packaging, so that the electrolyte can permeate into the battery core; or standing for 25-35 h at the high temperature of 35-45 ℃. The normal temperature standing time is too long, which affects the production efficiency, and the high temperature standing will increase the energy consumption and the production cost. Therefore, there is a need for an improvement in the conventional electrolyte impregnation method to improve the production efficiency without increasing the production cost.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a method for improving the electrolyte infiltration of a soft package lithium ion battery so as to solve the problems of poor infiltration performance and long standing time of the existing electrolyte.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a method for improving the electrolyte infiltration of a soft package lithium ion battery comprises the following steps:
(1) placing the battery cell subjected to top side sealing packaging in an oven to remove moisture, and then cooling to a certain temperature to keep the temperature constant; preheating the electrolyte for later use;
(2) placing the battery cell in the step (1) in the middle of a designed clamping plate for clamping, then vacuumizing, keeping the vacuum degree for 5-10 s, injecting the preheated electrolyte in the step (1), and standing for 10-60 s;
(3) applying an outward force to the aluminum-plastic film of the battery cell in the step (2), and pulling the aluminum-plastic film for 5-10 s; then clamping by using a clamping plate, applying roller pressure from bottom to top, discharging the pressed gas from the airbag, and repeatedly rolling;
(4) vacuumizing the battery cell in the step (3), keeping the vacuum degree for 2-5 s, and then sealing;
(5) and (5) placing the sealed battery cell in the step (4) in a designed rotating device, and rotating at a low speed for 1-3 hours to finish infiltration.
In the above method for improving the electrolyte infiltration of the soft package lithium ion battery, the steps are as follows:
preferably, the cell in the step (1) is kept at a constant temperature of 40-60 ℃, and the preheating temperature of the electrolyte is 30-80 ℃.
Preferably, the clamping pressure of the clamping plate in the step (2) is 50-100 KPa, the vacuum degree of vacuumizing is-50 to-90 KPa, and the vacuum maintaining time is 5-10 s.
Preferably, the pulling force for pulling the aluminum plastic film open in the step (3) is 10N-30N, and the holding time is 5-10 s; the clamping pressure of the clamping plate is 100-150 KPa, the rolling pressure is 120-200 KPa, and the number of repeated rolling is 2-8.
Preferably, the vacuum degree of the vacuum pumping in the step (4) is-50 to-90 KPa, the holding time is 2 to 5s, the packaging temperature is 165 to 175 ℃, and the sealing time is 3 to 5 s.
Preferably, the rotation angle in the step (5) is 360 degrees, the battery cell placing angle is 60-90 degrees, and the rotation time is 1-3 hours.
The invention has the beneficial effects that: the battery core and the electrolyte are preheated, so that the viscosity of the electrolyte is reduced, the resistance of the electrolyte is reduced, and the wettability is improved; meanwhile, the cell is clamped at normal temperature, vacuumized and re-injected, then the aluminum-plastic film is pulled open, clamped, repeatedly rolled and exhausted, so that residual gas in the cell is exhausted, electrolyte is promoted to rapidly infiltrate into the cell, and the positive and negative electrode plates are wetted. After packaging, the battery core is arranged in a rotating device to rotate, the battery core is placed at an angle of 60-90 degrees, the gravity and centripetal force of electrolyte are exerted, the electrolyte is favorably and rapidly infiltrated into the battery core, and meanwhile, the transmission capacity of the electrolyte to the periphery towards the center is improved.
Detailed Description
The present invention is described in detail below with reference to specific embodiments, and the description in this section is only exemplary and explanatory and should not be construed as limiting the scope of the present invention in any way.
A method for improving the electrolyte infiltration of a soft package lithium ion battery comprises the following steps:
(1) placing the battery cell subjected to top side sealing packaging in an oven to remove moisture, and then cooling to a certain temperature to keep the temperature constant; preheating the electrolyte for later use;
(2) placing the battery cell in the step (1) in the middle of a designed clamping plate for clamping, then vacuumizing, keeping the vacuum degree for 5-10 s, injecting the preheated electrolyte in the step (1), and standing for 10-60 s;
(3) applying an outward force to the aluminum-plastic film of the battery cell in the step (2), and pulling the aluminum-plastic film for 5-10 s; then clamping by using a clamping plate, applying roller pressure from bottom to top, discharging the pressed gas from the airbag, and repeatedly rolling;
(4) vacuumizing the battery cell in the step (3), keeping the vacuum degree for 2-5 s, and then sealing;
(5) and (5) placing the sealed battery cell in the step (4) in a designed rotating device, and rotating at a low speed for 1-3 hours to finish infiltration.
In the above method for improving the electrolyte infiltration of the soft package lithium ion battery, the steps are as follows:
preferably, the cell in the step (1) is kept at a constant temperature of 40-60 ℃, and the preheating temperature of the electrolyte is 30-80 ℃.
Preferably, the clamping pressure of the clamping plate in the step (2) is 50-100 KPa, the vacuum degree of vacuumizing is-50 to-90 KPa, and the vacuum maintaining time is 5-10 s.
Preferably, the pulling force for pulling the aluminum plastic film open in the step (3) is 10N-30N, and the holding time is 5-10 s; the clamping pressure of the clamping plate is 100-150 KPa, the rolling pressure is 120-200 KPa, and the number of repeated rolling is 2-8.
Preferably, the vacuum degree of the vacuum pumping in the step (4) is-50 to-90 KPa, the holding time is 2 to 5s, the packaging temperature is 165 to 175 ℃, and the sealing time is 3 to 5 s.
Preferably, the rotation angle in the step (5) is 360 degrees, the battery cell placing angle is 60-90 degrees, and the rotation time is 1-3 hours.
Example 1:
(1) placing the battery cell subjected to top side sealing packaging in an oven to remove moisture, then cooling to a certain temperature, keeping the temperature constant at 40 ℃, and simultaneously preheating the electrolyte at 60 ℃ for later use;
(2) placing the battery core in the step (1) in the middle of a designed clamping plate, clamping under the pressure of 60KPa, then vacuumizing to 80KPa, keeping the vacuum degree for 8s, injecting the electrolyte preheated in the step (1), and standing for 50s;
(3) applying an outward force to the aluminum-plastic film of the battery cell in the step (2), wherein the pulling force for pulling the aluminum-plastic film is 20N, and keeping for 7 s; then clamping by using a clamping plate, wherein the clamping pressure is 120KPa, and applying roller pressure from bottom to top, the pressure is 150KPa, discharging the pressed gas from the airbag, and repeatedly rolling for 3 times;
(4) vacuumizing the battery cell in the step (3), keeping the vacuum degree at minus 80KPa for 3s, and then sealing at the temperature of 170 ℃ for 3s;
(5) and (5) placing the sealed battery cell in the step (4) in a designed rotating device, wherein the rotating angle is 360 degrees, the battery cell placing angle is 90 degrees, and the battery cell is rotated at a low speed for 2 hours to finish infiltration.
Example 2:
(1) placing the battery cell subjected to top side sealing packaging in an oven to remove moisture, then cooling to a certain temperature, keeping the temperature at 60 ℃, and simultaneously preheating the electrolyte at 80 ℃ for later use;
(2) placing the soft package battery core in the step (1) in the middle of a designed clamping plate, clamping at the pressure of 80KPa, then vacuumizing to 90KPa, keeping the vacuum degree for 10s, injecting the electrolyte preheated in the step (1), and standing for 30s;
(3) applying an outward force to the aluminum-plastic film of the battery cell in the step (2), wherein the pulling force for pulling the aluminum-plastic film is 10N, and keeping for 10s; then clamping by using a clamping plate, wherein the clamping pressure is 100KPa, and applying roller pressure from bottom to top, the pressure is 200KPa, discharging the pressed gas from the airbag, and repeatedly rolling for 8 times;
(4) vacuumizing the battery cell in the step (3), keeping the vacuum degree at-90 KPa for 2s, and sealing at 175 ℃ for 3s;
(5) and (5) placing the sealed battery cell in the step (4) in a designed rotating device, wherein the rotating angle is 360 degrees, the battery cell placing angle is 80 degrees, and the battery cell is rotated at a low speed for 3 hours to finish infiltration.
Example 3:
(1) placing the battery cell subjected to top side sealing packaging in an oven to remove moisture, then cooling to a certain temperature, keeping the temperature at 50 ℃, and simultaneously preheating the electrolyte at 70 ℃ for later use;
(2) placing the soft package battery core in the step (1) in the middle of a designed clamping plate, clamping at the pressure of 70KPa, then vacuumizing to 70KPa, keeping the vacuum degree for 5s, injecting the electrolyte preheated in the step (1), and standing for 40s;
(3) applying an outward force to the aluminum-plastic film of the battery cell in the step (2), wherein the pulling force for pulling the aluminum-plastic film is 30N, and keeping for 5s; then clamping by using a clamping plate, wherein the clamping pressure is 150KPa, and applying roller pressure from bottom to top, the pressure is 180KPa, discharging the pressed gas from the airbag, and repeatedly rolling for 2 times;
(4) vacuumizing the battery cell in the step (3), keeping the vacuum degree at-60 KPa for 5s, and sealing at 165 ℃ for 5s;
(5) and (5) placing the sealed battery cell in the step (4) in a designed rotating device, wherein the rotating angle is 360 degrees, the battery cell placing angle is 80 degrees, and the battery cell is rotated at a low speed for 2 hours to finish infiltration.
Example 4:
(1) placing the battery cell subjected to top side sealing packaging in an oven to remove moisture, then cooling to a certain temperature, keeping the temperature at 60 ℃, and simultaneously preheating the electrolyte at 50 ℃ for later use;
(2) placing the soft package battery core in the step (1) in the middle of a designed clamping plate, clamping at the pressure of 50KPa, then vacuumizing to 60KPa, keeping the vacuum degree for 7s, injecting the electrolyte preheated in the step (1), and standing for 40s;
(3) applying an outward force to the aluminum-plastic film of the battery cell in the step (2), wherein the pulling force for pulling the aluminum-plastic film is 20N, and keeping for 8 s; then clamping by using a clamping plate, wherein the clamping pressure is 120KPa, and applying roller pressure from bottom to top, the pressure is 120KPa, discharging the pressed gas from the airbag, and repeatedly rolling for 5 times;
(4) vacuumizing the battery cell in the step (3), keeping the vacuum degree at-70 KPa for 4s, and sealing at 170 ℃ for 4s;
(5) and (5) placing the sealed battery cell in the step (4) in a designed rotating device, wherein the rotating angle is 360 degrees, the battery cell placing angle is 70 degrees, and the battery cell is rotated at a low speed for 3 hours to finish infiltration.
Example 5:
(1) placing the battery cell subjected to top side sealing packaging in an oven to remove moisture, then cooling to a certain temperature, keeping the temperature at 60 ℃, and simultaneously preheating the electrolyte at 30 ℃ for later use;
(2) placing the soft package battery core in the step (1) in the middle of a designed clamping plate, clamping at the pressure of 90KPa, then vacuumizing to 50KPa, keeping the vacuum degree for 9s, injecting the electrolyte preheated in the step (1), and standing for 40s;
(3) applying an outward force to the aluminum-plastic film of the battery cell in the step (2), wherein the pulling force for pulling the aluminum-plastic film is 10N, and keeping for 6 s; then clamping by using a clamping plate, wherein the clamping pressure is 130KPa, and applying roller pressure from bottom to top, the pressure is 170KPa, discharging the pressed gas from the airbag, and repeatedly rolling for 4 times;
(4) vacuumizing the battery cell in the step (3), keeping the vacuum degree at-85 KPa for 3s, and sealing at 175 ℃ for 4s;
(5) and (5) placing the sealed battery cell in the step (4) in a designed rotating device, wherein the rotating angle is 360 degrees, the battery cell placing angle is 60 degrees, and the battery cell is rotated at a low speed for 1h to finish infiltration.
Comparative example 1:
(1) vacuumizing the battery cell with the moisture removed, keeping the vacuum degree for 3-6 s, injecting required amount of electrolyte, and standing for 10s;
(2) vacuumizing the battery cell of the battery cell after standing, keeping the vacuum degree at minus 80KPa for 4s, and then sealing at 170 ℃;
(3) and (3) standing the battery cell in the step (2) at normal temperature for 24 hours to finish infiltration.
The method for improving the electrolyte infiltration of the soft package lithium ion battery can improve the infiltration performance of the electrolyte and shorten the standing time.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any minor modifications, equivalent changes and modifications made to the above embodiment according to the technical spirit of the present invention are within the technical scope of the present invention.
Claims (6)
1. The method for improving the electrolyte infiltration of the soft package lithium ion battery is characterized by comprising the following steps of:
(1) placing the battery cell subjected to top side sealing packaging in an oven to remove moisture; preheating the electrolyte for later use;
(2) placing the battery cell in the step (1) in the middle of a designed clamping plate for clamping, then vacuumizing, keeping the vacuum degree for 5-10 s, injecting the preheated electrolyte in the step (1), and standing for 10-60 s;
(3) applying an outward force to the aluminum-plastic film of the battery cell in the step (2), and pulling the aluminum-plastic film for 5-10 s; then clamping by using a clamping plate, applying roller pressure from bottom to top, discharging the pressed gas from the airbag, and repeatedly rolling for 2-4 times;
(4) vacuumizing the battery cell in the step (3), keeping the vacuum degree for 2-5 s, and then sealing;
(5) and (5) placing the sealed battery cell in the step (4) in a designed rotating device, and rotating at a low speed for 1-3 hours to finish infiltration.
2. The method for improving the electrolyte infiltration of the soft package lithium ion battery according to claim 1, wherein the cell is kept at a constant temperature of 40-60 ℃ in the step (1), and the preheating temperature of the electrolyte is 30-80 ℃.
3. The method for improving the electrolyte infiltration of the soft package lithium ion battery according to claim 1, wherein the clamping pressure of the clamping plate in the step (2) is 50-100 KPa, the vacuum degree of vacuumizing is-50-90 KPa, and the vacuum maintaining time is 5-10 s.
4. The method for improving the electrolyte infiltration of the soft package lithium ion battery according to claim 1, wherein the pulling force for pulling the aluminum plastic film in the step (3) is 10N to 30N, and the holding time is 5 to 10s; the clamping pressure of the clamping plate is 100-150 KPa, the rolling pressure is 120-200 KPa, and the number of repeated rolling is 2-8.
5. The method for improving the electrolyte infiltration of the soft package lithium ion battery according to claim 1, wherein the vacuumizing in the step (4) is carried out under the vacuum degree of-50 to-90 KPa, the holding time is 2 to 5s, the packaging temperature is 165 to 175 ℃, and the sealing time is 3 to 5 s.
6. The method for improving the electrolyte infiltration of the soft package lithium ion battery according to claim 1, wherein the rotation angle in the step (5) is 360 degrees, the cell placement angle is 60-90 degrees, and the rotation time is 1-3 hours.
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| CN201811058533.XA CN110896153A (en) | 2018-09-12 | 2018-09-12 | Method for improving electrolyte infiltration of soft package lithium ion battery |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111416158A (en) * | 2020-04-26 | 2020-07-14 | 天津市捷威动力工业有限公司 | Pole piece infiltration method of soft package lithium ion battery |
| CN112436193A (en) * | 2020-11-30 | 2021-03-02 | 珠海冠宇电池股份有限公司 | Battery cell aging equipment and aging control method |
| CN112736374A (en) * | 2020-12-25 | 2021-04-30 | 浙江锂威能源科技有限公司 | Method for improving liquid retention capacity of soft package lithium ion battery |
| CN112735826A (en) * | 2020-12-25 | 2021-04-30 | 深圳市智胜新电子技术有限公司 | Impregnation process of aluminum electrolytic capacitor core group |
| CN114171801A (en) * | 2021-11-30 | 2022-03-11 | 天津市捷威动力工业有限公司 | Electrolyte infiltration method of soft package battery core |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102646809A (en) * | 2012-04-23 | 2012-08-22 | 宁德新能源科技有限公司 | Filling and activating method for flexible-packaging lithium ion battery |
| CN106602145A (en) * | 2016-11-24 | 2017-04-26 | 天津市捷威动力工业有限公司 | Apparatus and method for improving infiltration performance of battery with high specific energy density |
| CN106654374A (en) * | 2015-10-30 | 2017-05-10 | 宝山钢铁股份有限公司 | Method for infiltrating soft-package lithium-ion battery electric core by electrolyte solution |
| CN206388801U (en) * | 2016-12-29 | 2017-08-08 | 惠州Tcl金能电池有限公司 | Battery electrolyte infiltration apparatus |
| CN107464911A (en) * | 2016-06-06 | 2017-12-12 | 万向二三股份公司 | A kind of lithium ion battery heated at constant temperature priming device and its method |
| CN107464955A (en) * | 2016-06-02 | 2017-12-12 | 万向二三股份公司 | A kind of electrolyte wetting method of soft bag lithium ionic cell |
-
2018
- 2018-09-12 CN CN201811058533.XA patent/CN110896153A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102646809A (en) * | 2012-04-23 | 2012-08-22 | 宁德新能源科技有限公司 | Filling and activating method for flexible-packaging lithium ion battery |
| CN106654374A (en) * | 2015-10-30 | 2017-05-10 | 宝山钢铁股份有限公司 | Method for infiltrating soft-package lithium-ion battery electric core by electrolyte solution |
| CN107464955A (en) * | 2016-06-02 | 2017-12-12 | 万向二三股份公司 | A kind of electrolyte wetting method of soft bag lithium ionic cell |
| CN107464911A (en) * | 2016-06-06 | 2017-12-12 | 万向二三股份公司 | A kind of lithium ion battery heated at constant temperature priming device and its method |
| CN106602145A (en) * | 2016-11-24 | 2017-04-26 | 天津市捷威动力工业有限公司 | Apparatus and method for improving infiltration performance of battery with high specific energy density |
| CN206388801U (en) * | 2016-12-29 | 2017-08-08 | 惠州Tcl金能电池有限公司 | Battery electrolyte infiltration apparatus |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111416158A (en) * | 2020-04-26 | 2020-07-14 | 天津市捷威动力工业有限公司 | Pole piece infiltration method of soft package lithium ion battery |
| CN112436193A (en) * | 2020-11-30 | 2021-03-02 | 珠海冠宇电池股份有限公司 | Battery cell aging equipment and aging control method |
| CN112436193B (en) * | 2020-11-30 | 2022-04-12 | 珠海冠宇电池股份有限公司 | Battery cell aging equipment and aging control method |
| CN112736374A (en) * | 2020-12-25 | 2021-04-30 | 浙江锂威能源科技有限公司 | Method for improving liquid retention capacity of soft package lithium ion battery |
| CN112735826A (en) * | 2020-12-25 | 2021-04-30 | 深圳市智胜新电子技术有限公司 | Impregnation process of aluminum electrolytic capacitor core group |
| CN112735826B (en) * | 2020-12-25 | 2022-09-06 | 惠州市智胜新电子技术有限公司 | Impregnation process of aluminum electrolytic capacitor core group |
| CN114171801A (en) * | 2021-11-30 | 2022-03-11 | 天津市捷威动力工业有限公司 | Electrolyte infiltration method of soft package battery core |
| CN114171801B (en) * | 2021-11-30 | 2023-07-07 | 天津市捷威动力工业有限公司 | Electrolyte infiltration method for battery cells of soft package battery |
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